var lastpic;
function showPic (whichpic) { 
	if (document.getElementById) { 
		document.getElementById('placeholder').src = whichpic.href;
		setTitle( whichpic );
		setClass( '' );
		if (whichpic.style)
			whichpic.style.backgroundColor = "#999";
		if (lastpic)
			lastpic.style.backgroundColor = "#ccc";
		lastpic = whichpic;
		return false; 
	} else {
		return true; 
	} 
}
function initPic() {
	if (document.getElementById) {
		var pic = document.getElementById('firstpic');
		if (pic) showPic( pic );
	}
}
function showTitle( whichpic ) {
	setTitle( whichpic );
	setClass( 'over' );
}
function resetTitle() {
	setTitle( lastpic );
	setClass( '' );
}
function setTitle( pic ) {
	if (pic.title) { 
		document.getElementById('desc').childNodes[0].nodeValue = pic.title; 
	} else { 
		document.getElementById('desc').childNodes[0].nodeValue = pic.childNodes[0].nodeValue; 
	}
}
function setClass( className ) {
	document.getElementById('desc').className = className;
}